> - If you want good self-hosted CI, you use teamcity (jetbrains) or bamboo (atlassian). Side note: They cost money, you get what you pay for.
Those are proprietary.
> - If you want good SaaS CI, you use travis-ci (linux), circle-ci (linux) or appveyor (windows).
I believe all of those are proprietary.
> There is no room for gitlab. Teamcity already has a free edition offering 20 projects and 3 slaves. All the aforementioned tools are free for open-source projects.
As far as I can tell, every project you mentioned except Jenkins is proprietary. And as much as I like Jenkins, you're right that it can be a proper pain to deal with. So you're just showing that there is a need for a good, free software, CI system. And GitLab is working on providing one.
Those are proprietary.
> - If you want good SaaS CI, you use travis-ci (linux), circle-ci (linux) or appveyor (windows).
I believe all of those are proprietary.
> There is no room for gitlab. Teamcity already has a free edition offering 20 projects and 3 slaves. All the aforementioned tools are free for open-source projects.
As far as I can tell, every project you mentioned except Jenkins is proprietary. And as much as I like Jenkins, you're right that it can be a proper pain to deal with. So you're just showing that there is a need for a good, free software, CI system. And GitLab is working on providing one.